CHICAGO — Sonnenblick-Eichner Co. has arranged a $265 million first mortgage loan for the refinancing of the 610-room JW Marriott Chicago hotel. The property is located at 151 W. Adams St.The hotel is part of a 1.1 million square-foot mixed-use property, which occupies a full city block in the financial district of downtown Chicago. A Wall Street investment bank provided a non-recourse, LIBOR-based floating-rate loan. The hotel occupies the lower floors of an iconic Daniel Burnham designed building, originally completed in 1914. The building is designated as a historic landmark and on the National Register of Historic Places. In 2008, the lower 12 floors were fully renovated and converted into the 610-room JW Marriott Chicago. Marriott International operates the hotel.